Ever wondered how we might measure the progress of an entire civilization ? Back in 1964, a visionary Soviet astrophysicist named Nikolai Kardashev had a big idea “What if we could rank civilizations ...
The universe we live in is so vast that even counting its stars and galaxies is unimaginable. In such an immense universe, how reasonable is it for life to exist only on Earth? The question, “Ar...
